We're dividing 763019 by 42 
The aim is to understand the frequency of 42 in 763019.

Step 1:
42 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 42

Going ahead to step 2:
42 can be fit into 76 1 times, resulting in a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 42 from 76 to get 34.
Append the next digit (3) from the dividend to 34 and continue with: 343 / 42

Advancing to step 3:
42 goes into 343 8 times with a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 336 from 343 and we're left with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 42

Let's proceed to step 4:
If we divide 70 by 42, we get 1 and a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 181.0
Subtracting 42 from 70 leaves us with 28.
Append the next digit (1) from the dividend to 28 and continue with: 281 / 42

On to step 5:
42 can be fit into 281 6 times, resulting in a remainder of 29.
Record the quotient 6 as the next digit in the result. 
Result so far: 1816.0
Subtracting 252 from 281 leaves us with 29.
Grab the next digit (9) from the dividend, add it to 29, then carry on: 299 / 42

Step 6:
42 goes into 299 7 times with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 18167.0
Subtracting 294 from 299 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
42 can be fit into 50 1 times, resulting in a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 18167.1
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 42 is 1 with a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 18167.11
Subtract 42 from 80 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 18167.11 with a remaining 0.038.